<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false"><div><div class="ydp4f8de5b8title-container" style="color: rgb(48, 48, 48); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 14px;"><h2 class="ydp4f8de5b8title ydp4f8de5b8qa-title" style="margin: 0px 0px 16px; line-height: 1.2; font-size: 2em; padding: 0px; border-bottom: 0px; min-width: 0px; width: 926px; text-align: initial;"><span style="font-size: 1.3em; text-align: initial; font-weight: normal;">Summary</span><br></h2></div><div class="ydp4f8de5b8description ydp4f8de5b8js-task-list-container ydp4f8de5b8is-task-list-enabled" style="margin-top: 6px; color: rgb(48, 48, 48); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 14px;"><div data-testid="gfm-content" class="ydp4f8de5b8md"><p data-sourcepos="9:1-9:85" style="margin: 0px 0px 16px; text-align: initial;">Docker0 interface is being resolved and DNS Clients cannot deal with the address.</p><h3 data-sourcepos="11:1-11:21" style="margin: 24px 0px 16px; line-height: 1.2; font-size: 1.3em; text-align: initial;"><a id="ydp4f8de5b8user-content-bind-version-used" class="ydp4f8de5b8anchor" href="https://gitlab.isc.org/isc-projects/bind9/-/issues/3330#bind-version-used" style="color: rgb(16, 104, 191); background-color: transparent; margin-top: 0px; float: left; outline: none;" rel="nofollow" target="_blank"></a>BIND version used</h3><p data-sourcepos="12:1-12:45" style="margin: 0px 0px 16px; text-align: initial;">BIND 9.18.1-1ubuntu1-Ubuntu (Stable Release)</p><h3 data-sourcepos="14:1-14:22" style="margin: 24px 0px 16px; line-height: 1.2; font-size: 1.3em; text-align: initial;"><a id="ydp4f8de5b8user-content-steps-to-reproduce" class="ydp4f8de5b8anchor" href="https://gitlab.isc.org/isc-projects/bind9/-/issues/3330#steps-to-reproduce" style="color: rgb(16, 104, 191); background-color: transparent; margin-top: 0px; float: left; outline: none;" rel="nofollow" target="_blank"></a>Steps to reproduce</h3><p data-sourcepos="15:1-16:26" style="margin: 0px 0px 16px; text-align: initial;">On a fresh Ubuntu 22.04 Server install and set Bind9 up. After that install docker.</p><h3 data-sourcepos="18:1-18:39" style="margin: 24px 0px 16px; line-height: 1.2; font-size: 1.3em; text-align: initial;"><a id="ydp4f8de5b8user-content-what-is-the-current-bug-behavior" class="ydp4f8de5b8anchor" href="https://gitlab.isc.org/isc-projects/bind9/-/issues/3330#what-is-the-current-bug-behavior" style="color: rgb(16, 104, 191); background-color: transparent; margin-top: 0px; float: left; outline: none;" rel="nofollow" target="_blank"></a>What is the current behavior?</h3><div style="margin: 0px 0px 16px; text-align: initial;">Nslookup from a <span><span style="color: rgb(48, 48, 48); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 14px;">DNS Client workstation</span></span> should not get docker0 ip addrees of the Bind9 Server PC.</div><div class="ydp4f8de5b8gl-relative ydp4f8de5b8markdown-code-block ydp4f8de5b8js-markdown-code" style="position: relative;"><pre data-sourcepos="20:1-29:3" class="ydp4f8de5b8code ydp4f8de5b8highlight ydp4f8de5b8js-syntax-highlight ydp4f8de5b8language-plaintext ydp4f8de5b8white" lang="plaintext" id="ydp4f8de5b8code-7" style="font-family: Menlo, "DejaVu Sans Mono", "Liberation Mono", Consolas, "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-size: 13px; margin-top: 0px; margin-bottom: 16px; position: relative; padding: 12px; border: 1px solid rgb(219, 219, 219); border-radius: 2px; text-shadow: none; line-height: 1.6em;"><code style="font-family: Menlo, "DejaVu Sans Mono", "Liberation Mono", Consolas, "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-size: inherit; color: inherit; background-color: inherit; border-radius: 4px; margin-top: 0px;"><span id="ydp4f8de5b8LC1" class="ydp4f8de5b8line" lang="plaintext" style="margin-top: 0px;">nslookup ns1.example.lan</span>
<span id="ydp4f8de5b8LC2" class="ydp4f8de5b8line" lang="plaintext">Server: UnKnown</span>
<span id="ydp4f8de5b8LC3" class="ydp4f8de5b8line" lang="plaintext">Address: fe80::f21f:afff:fe5d:be90</span>
<span id="ydp4f8de5b8LC4" class="ydp4f8de5b8line" lang="plaintext"></span>
<span id="ydp4f8de5b8LC5" class="ydp4f8de5b8line" lang="plaintext">Name: ns1.example.lan</span>
<span id="ydp4f8de5b8LC6" class="ydp4f8de5b8line" lang="plaintext">Addresses: 2a02:8084:601b:b80:f21f:afff:fe5d:be90</span>
<span id="ydp4f8de5b8LC7" class="ydp4f8de5b8line" lang="plaintext"> 192.168.0.10</span>
<span id="ydp4f8de5b8LC8" class="ydp4f8de5b8line" lang="plaintext"> 172.17.0.1</span></code></pre><button class="ydp4f8de5b8btn ydp4f8de5b8btn-default ydp4f8de5b8btn-md ydp4f8de5b8gl-button ydp4f8de5b8btn-icon ydp4f8de5b8has-tooltip" data-title="Copy to clipboard" data-clipboard-target="pre#code-7" style="margin: 0px; font-family: inherit; cursor: pointer; font-weight: 400; color: rgb(82, 82, 82); vertical-align: middle; background-color: rgb(255, 255, 255); border-width: 0px; border-style: solid; border-color: rgb(219, 219, 219); white-space: nowrap;"></button></div><h3 data-sourcepos="30:1-30:44" style="margin: 24px 0px 16px; line-height: 1.2; font-size: 1.3em; text-align: initial;"><a id="ydp4f8de5b8user-content-what-is-the-expected-correct-behavior" class="ydp4f8de5b8anchor" href="https://gitlab.isc.org/isc-projects/bind9/-/issues/3330#what-is-the-expected-correct-behavior" style="color: rgb(16, 104, 191); background-color: transparent; margin-top: 0px; float: left; outline: none;" rel="nofollow" target="_blank"></a>What is the expected behavior?</h3><p data-sourcepos="31:1-31:35" style="margin: 0px 0px 16px; text-align: initial;">I should have the following answer on a DNS Client workstation:</p><div class="ydp4f8de5b8gl-relative ydp4f8de5b8markdown-code-block ydp4f8de5b8js-markdown-code" style="position: relative;"><pre data-sourcepos="32:1-40:3" class="ydp4f8de5b8code ydp4f8de5b8highlight ydp4f8de5b8js-syntax-highlight ydp4f8de5b8language-plaintext ydp4f8de5b8white" lang="plaintext" id="ydp4f8de5b8code-8" style="font-family: Menlo, "DejaVu Sans Mono", "Liberation Mono", Consolas, "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-size: 13px; margin-top: 0px; margin-bottom: 16px; position: relative; padding: 12px; border: 1px solid rgb(219, 219, 219); border-radius: 2px; text-shadow: none; line-height: 1.6em;"><code style="font-family: Menlo, "DejaVu Sans Mono", "Liberation Mono", Consolas, "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-size: inherit; color: inherit; background-color: inherit; border-radius: 4px; margin-top: 0px;"><span id="ydp4f8de5b8LC1" class="ydp4f8de5b8line" lang="plaintext" style="margin-top: 0px;">nslookup ns1.example.lan</span>
<span id="ydp4f8de5b8LC2" class="ydp4f8de5b8line" lang="plaintext">Server: UnKnown</span>
<span id="ydp4f8de5b8LC3" class="ydp4f8de5b8line" lang="plaintext">Address: fe80::f21f:afff:fe5d:be90</span>
<span id="ydp4f8de5b8LC4" class="ydp4f8de5b8line" lang="plaintext"></span>
<span id="ydp4f8de5b8LC5" class="ydp4f8de5b8line" lang="plaintext">Name: ns1.example.lan</span>
<span id="ydp4f8de5b8LC6" class="ydp4f8de5b8line" lang="plaintext">Addresses: 2a02:8084:601b:b80:f21f:afff:fe5d:be90</span>
<span id="ydp4f8de5b8LC7" class="ydp4f8de5b8line" lang="plaintext"> 192.168.0.10</span></code></pre><button class="ydp4f8de5b8btn ydp4f8de5b8btn-default ydp4f8de5b8btn-md ydp4f8de5b8gl-button ydp4f8de5b8btn-icon ydp4f8de5b8has-tooltip" data-title="Copy to clipboard" data-clipboard-target="pre#code-8" style="margin: 0px; font-family: inherit; cursor: pointer; font-weight: 400; color: rgb(82, 82, 82); vertical-align: middle; background-color: rgb(255, 255, 255); border-width: 0px; border-style: solid; border-color: rgb(219, 219, 219); white-space: nowrap;"></button></div><h3 data-sourcepos="42:1-42:32" style="margin: 24px 0px 16px; line-height: 1.2; font-size: 1.3em; text-align: initial;"><a id="ydp4f8de5b8user-content-relevant-configuration-files" class="ydp4f8de5b8anchor" href="https://gitlab.isc.org/isc-projects/bind9/-/issues/3330#relevant-configuration-files" style="color: rgb(16, 104, 191); background-color: transparent; margin-top: 0px; float: left; outline: none;" rel="nofollow" target="_blank"></a>Relevant configuration files</h3><p data-sourcepos="43:1-43:31" style="margin: 0px 0px 16px; text-align: initial;">Interfaces from the ns1 server:</p><div class="ydp4f8de5b8gl-relative ydp4f8de5b8markdown-code-block ydp4f8de5b8js-markdown-code" style="position: relative;"><pre data-sourcepos="44:1-67:3" class="ydp4f8de5b8code ydp4f8de5b8highlight ydp4f8de5b8js-syntax-highlight ydp4f8de5b8language-plaintext ydp4f8de5b8white" lang="plaintext" id="ydp4f8de5b8code-9" style="font-family: Menlo, "DejaVu Sans Mono", "Liberation Mono", Consolas, "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-size: 13px; margin-top: 0px; margin-bottom: 16px; position: relative; padding: 12px; border: 1px solid rgb(219, 219, 219); border-radius: 2px; text-shadow: none; line-height: 1.6em;"><code style="font-family: Menlo, "DejaVu Sans Mono", "Liberation Mono", Consolas, "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-size: inherit; color: inherit; background-color: inherit; border-radius: 4px; margin-top: 0px;"><span id="ydp4f8de5b8LC1" class="ydp4f8de5b8line" lang="plaintext" style="margin-top: 0px;">1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000</span>
<span id="ydp4f8de5b8LC2" class="ydp4f8de5b8line" lang="plaintext"> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00</span>
<span id="ydp4f8de5b8LC3" class="ydp4f8de5b8line" lang="plaintext"> inet 127.0.0.1/8 scope host lo</span>
<span id="ydp4f8de5b8LC4" class="ydp4f8de5b8line" lang="plaintext"> valid_lft forever preferred_lft forever</span>
<span id="ydp4f8de5b8LC5" class="ydp4f8de5b8line" lang="plaintext"> inet6 ::1/128 scope host</span>
<span id="ydp4f8de5b8LC6" class="ydp4f8de5b8line" lang="plaintext"> valid_lft forever preferred_lft forever</span>
<span id="ydp4f8de5b8LC7" class="ydp4f8de5b8line" lang="plaintext">2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000</span>
<span id="ydp4f8de5b8LC8" class="ydp4f8de5b8line" lang="plaintext"> link/ether f0:1f:af:5d:be:90 brd ff:ff:ff:ff:ff:ff</span>
<span id="ydp4f8de5b8LC9" class="ydp4f8de5b8line" lang="plaintext"> altname enp0s25</span>
<span id="ydp4f8de5b8LC10" class="ydp4f8de5b8line" lang="plaintext"> inet 192.168.0.10/24 brd 192.168.0.255 scope global eno1</span>
<span id="ydp4f8de5b8LC11" class="ydp4f8de5b8line" lang="plaintext"> valid_lft forever preferred_lft forever</span>
<span id="ydp4f8de5b8LC12" class="ydp4f8de5b8line" lang="plaintext"> inet6 2a02:8084:601b:b80:f21f:afff:fe5d:be90/64 scope global dynamic mngtmpaddr noprefixroute</span>
<span id="ydp4f8de5b8LC13" class="ydp4f8de5b8line" lang="plaintext"> valid_lft 920763sec preferred_lft 317904sec</span>
<span id="ydp4f8de5b8LC14" class="ydp4f8de5b8line" lang="plaintext"> inet6 fe80::f21f:afff:fe5d:be90/64 scope link</span>
<span id="ydp4f8de5b8LC15" class="ydp4f8de5b8line" lang="plaintext"> valid_lft forever preferred_lft forever</span>
<span id="ydp4f8de5b8LC16" class="ydp4f8de5b8line" lang="plaintext">3: wlp2s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000</span>
<span id="ydp4f8de5b8LC17" class="ydp4f8de5b8line" lang="plaintext"> link/ether e0:9d:31:07:f0:e8 brd ff:ff:ff:ff:ff:ff</span>
<span id="ydp4f8de5b8LC18" class="ydp4f8de5b8line" lang="plaintext">4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default</span>
<span id="ydp4f8de5b8LC19" class="ydp4f8de5b8line" lang="plaintext"> link/ether 02:42:3a:db:3b:55 brd ff:ff:ff:ff:ff:ff</span>
<span id="ydp4f8de5b8LC20" class="ydp4f8de5b8line" lang="plaintext"> inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0</span>
<span id="ydp4f8de5b8LC21" class="ydp4f8de5b8line" lang="plaintext"> valid_lft forever preferred_lft forever</span>
<span id="ydp4f8de5b8LC22" class="ydp4f8de5b8line" lang="plaintext"></span></code></pre><button class="ydp4f8de5b8btn ydp4f8de5b8btn-default ydp4f8de5b8btn-md ydp4f8de5b8gl-button ydp4f8de5b8btn-icon ydp4f8de5b8has-tooltip" data-title="Copy to clipboard" data-clipboard-target="pre#code-9" style="margin: 0px; font-family: inherit; cursor: pointer; font-weight: 400; color: rgb(82, 82, 82); vertical-align: middle; background-color: rgb(255, 255, 255); border-width: 0px; border-style: solid; border-color: rgb(219, 219, 219); white-space: nowrap;"></button></div><h3 data-sourcepos="69:1-69:18" style="margin: 24px 0px 16px; line-height: 1.2; font-size: 1.3em; text-align: initial;"><a id="ydp4f8de5b8user-content-possible-fixes" class="ydp4f8de5b8anchor" href="https://gitlab.isc.org/isc-projects/bind9/-/issues/3330#possible-fixes" style="color: rgb(16, 104, 191); background-color: transparent; margin-top: 0px; float: left; outline: none;" rel="nofollow" target="_blank"></a>What am I doing wrong?</h3><div style="margin: 0px; text-align: initial;">Please, can you help?</div><div style="margin: 0px; text-align: initial;" dir="ltr" data-setdir="false">How can I stop Bind to resolve docker0 ip address?</div><div style="margin: 0px; text-align: initial;" dir="ltr" data-setdir="false"><br></div><div style="margin: 0px; text-align: initial;" dir="ltr" data-setdir="false">Yours sincerely,</div><div style="margin: 0px; text-align: initial;" dir="ltr" data-setdir="false">Mauricio</div></div></div></div><br></div></div></body></html>